Electric bell.



No. 70|,572. Patnted June 3, I902.

H. F. KEIL.

ELECTRIC BELL.

'Application filed Aug. 2. 1901.;

(No Model.)

. Invento r; mmwkm kill dftol-rua "m5 Norms PETERS co, wcn'o-umu, WASHmQ11111 c UNITED STATES PATENT OEEIcE.

HENRY FRANCIS KEIL, OF NE\V YORK, N. Y.

ELECTRIC BELL...

SPECIFICATION forming part of Letters Patent No. 701,572, dated June 3,19.02.

Application filed August 2, 1901.

To all whom it nuty concern:

Be it known that I, HENRY FRANCIS KEIL, a citizen of the United States,and a resident of New York, in the county and State of New York, haveinvented a certain new and useful Electric Bell, of which the followingis a specification.

My invention relates to an alarm or signaling device controlled oroperated by a current of electricity in which the armature may besupported adjacent to or turned transversely to the electromagnetholding the same and retained in such positions at will; and ithas forits object the provision of an instrument of the kind set forth simplein construction, inexpensive to manufacture, and which combinescompactness of structuroand light weight and also increased efficiencyin practical operation.

To attain the desired end, this my invention consists in theconstruction, arrangement, and operation of parts herein set forth.

In the drawings which accompany and form a part of this specification,Figure l represents a front elevation of a bell constructed according tomy invention. Fig. 2 is a side elevation of the same, and Figs. 3, l, 5,6, and 7 are views in detail of means for supporting the armature.

Like letters of reference indicate like parts in all the views.

Referring to the drawings, A denotes a gong-bell, and B a smallelectromagnet, to the armature O of which the hammer D of the bell isattached. The arrangement is such that when the circuit on which thebell is placed is completed by any suitable means, as by pressing down abutton, (not shown,) the current passes in the ordinary manner throughthe binding-posts of the bell and post E by a springE to the armature,thence to the electromagnet, its core I) is magnetized, the armature Gis attracted, and the hammer D strikes the gong A. The circuit beingbroken by the motion of the armature O and spring E from the post E,'theelectromagnet ceases to act, the armature 0 falls back, completes thecircuit again, and thus the automatic action ofthe hammer continues aslong as the current passes.

The spring E sustains the armature C and is provided at its pivotedextremity with one $erial No- 70,5'7l. (No model.)

member of my locking means, consisting, preferably, of aradially-corrugated disk 6, or, if desired, of a smooth plate or disk eas in Fig. 6, or a plate or disk 6 provided with one or more notches oropenings, as in Fig. 7, each plate or disk being provided with a centralorifice e. (Shown in Fig. 2.) The second member of my locking deviceconsists, preferably, of a similarly-corrugated disk g, or, if desired,of a smooth plate or disk g as in Fig. 6, or a plate or disk 1 providedwith one or more projections, as in Fig. 7, each plate or disk beingprovided with a central orifice g, (shown in Fig. 3,) formed in asupporting spring-plate G, the central orifices e g of the two saiddisks being constructed and arranged to register with each other. Thesaid spring-plate Gr has a lateral extension G provided with a circularopening g (shown in Fig.4) to fit the end of one of the cores of theelectromagnet and to be rigidly engaged therewith in such a manner as tobe sprung upon or detached from the same at will without disturbing theelectromagnet. The other end G'ofthe spring-plate G extends rearward ofthe locking plate or disk, as g, and is bent up U shape in cross-sectionand is provided with a perforation g in alinement with the orifice g. Afastening device, as a bolt or elongated eyelet H, is preferably looselypassed through the orifices e, g, and 9, so as to hold the partssecurely in their normal positions and yet allow the armature to beturned transversely or outward relatively to the electromagnet anydistance desired, the corrugations of the disk (2 riding over thecorrugations of the disk 9 on account of the resilience of thespring-plate G and serving to hold the armature at any desired distancefrom the electromagnet, as for purposes of examining or cleaning theparts. Upon pushing the armature back again it will resume its exactnormal position without requiring any adjustment whatever. By supporting the armature directly upon the core of the electromagnet a verysimple, inexpensive, and efficient construction and arrange ment of theparts is effected, or, if preferred, the plates or disks 6 6 in Figs. (3and 7 may be rigidly engaged with theplates or disks by means of thebolt H passing through the central. orifices of the parts, and the nutISO h located on the threaded end of the said bolt H By thisconstruction I am able by manipulating the part of the locking deviceconsisting of the nut 71. either to allow the armature to turn withoutrestraint or to hold the said armature rigidly in position at will.

In Fig. 5 the corrugated plates or disks (2 are shown secured togetherby the bolt 11 and nut h which construction may be used in lieu of thebolt or pin II. (Shown in Fig. 1.)

As it is .evident that many changes in the construction, form,proportion, and relative arrangement of parts might be resorted towithout departing from the spirit and scope of my invention, I wouldhave it understood that I do not restrict myself to the particularconstruction and arrangement of parts shown and described, but that suchchanges and equivalents may be substituted therefor and that What Iclaim as my invention is 1. An electromagnet, an armature, a sup-- porttherefor sustained by the core of the magnet, and constructed andarranged to be sprung on or detached from the core at will, and means tohold the armature so as to move toward the electromagnet or transverselyof the same.

2. An electromagnet, an armature, a support therefor sustained by thecore of the magnet, and constructed and arranged to be sprung on ordetached from the said core at will, means to hold the armature so as tomove toward the electromagnet or transversely of the same, and a lockingdevice intermediate the armature and support, where by the said armaturemay be sustained in a locked relation.

3. An electromagnet, an armature, a supporting-plate constructed andarranged to be sprung on or detached from the magnet-core at will, meansto hold the armature so as,to be moved toward the electromagnet ortransversely of the same, and a locking device, one part of said lockingmeans being attached to the armature, and the other portion forming apart of said support.

4-. An electromagnet, an armature, a supporting-plate constructed andarranged to be sprung on or detached from the magnetcore at will, meansto hold the armature so as to move toward the electromagnet ortransversely of the same, and a locking device, consisting of acorrugated disk, attached to the armature, and another portion,consisting also of a corrugated disk, forming a part of said support.

5. An electromagnet, an armature, a springplate supported by the core ofsaid magnet, means to hold the armature so as to move toward theelectromagnet or transversely of the same, and a locking device, onepart of said locking device consisting of a corrugated disk, attached tothe armature, and the other part, consisting also of a corrugated disk,supported by said spring-plate.

6. An electromagnet, a spring-plate sup ported by the core of saidmagnet, an armature, and a locking device, one member of said lockingdevice, consisting of a disk, at-

tached to the armature, and another member, i

also consisting of a disk, supported by the said spring-plate, the twomembers being held together by means passing through the said disks.

7. An electromagnet, a spring-plate supported by the core of saidmagnet, an armature, and a locking device, one member of said lockingdevice, consisting of a disk, at tached to the armature, and anothermember, also consisting of a disk, supported by said spring-plate, thetwo members being held together by means passing through the said disksand through an extension of the second member of the locking device.

8. An electromagnet, a spring-plate sus tained by the core of saidmagnet, an armature coacting with the magnet and mounted to turn, and alocking device coacting with the armature, whereby, upon manipulation,the movable pivoted armature may be rigidly held in any desired adjustedposition.

In testimony of the foregoing specification I do hereby sign the same,in the city of New York, county and State of New York, this 11th day of-l'uly, A. D. 1001.

HENRY FRANCIS KEIL.

Witnesses:

F. A. Wunznncn, Inns. II. J. DILG.

